/Engine/Source/Developer/ToolWidgets/Public/Filters/SBasicFilterBar.h
Add a custom filter to the FilterBar. NOTE: This only adds it to the Add Filter Menu, and does not automatically add it to the filter bar or activate it
void AddFilter ( [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FFilterBase](API\Developer\ToolWidgets\Filters\FFilterBase)< FilterType >> InFilter )